[url]http://www.hyperbol.com/[/url]
I've been playing this for a few days now... its a little hard to explain what it is tbh, its kind of like a real time version of worms or scorched earth, but played on a horizontal plane with a 3d space setting.
It has a vicious learning curve, and I've found it kinda frustrating in places (spawn camping by level something much higher then me).
That said, in the team based maps i've played are a lot of fun, u have to be tactically aware of the other players, as well as quick enough with aiming and firing your own arsenal of weapons.
well worth a look if you fancy something slightly different.